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JEE Main2006ChemistrySome Basic Concepts of ChemistryActual

How many moles of magnesium phosphate, Mg ₃ ( PO ₄ )₂ will contain 0.25 mole of oxygen atoms?

Options

  1. A0.02
  2. B3.125 10⁻²
  3. C1.25 10⁻²
  4. D2.5 10⁻²

Correct answer

B. 3.125 10⁻²

Step-by-step solution

Mg ₃ ( PO ₄ )₂ 'n' moles 8 n =0.25 n = 0.25 8 = 25 8 100 =3.125 10⁻²

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